(credit: Flickr user Hullabaloon. ) One of the less satisfying aspects of modern physics is the increasing separation between the phenomena that we measure and the experimenter. We measure almost everything today indirectly. If we operate our lab safely, we never directly detect an electron—instead, that charge creates a tiny potential difference on an amplifier. The amplifier generates a larger current that might drive a coil that is attached to a needle on a dial. This level of indirection is the reality of modern physics. And the alternative—passing large currents through your body—is discouraged. Yet, the desire to really see what is going on is hard to resist. This has led to an interesting publication that proposes a way to detect quantum mechanical behavior directly with the human eye. Seeing single photons The behavior in question is entanglement. But before getting to that, let’s talk about the eye. The human visual system is a pretty poor instrument as far as optics go. The eye is actually pretty good; experiments have revealed that the rods in your eye are sensitive to single photons. The brain, however, is smart; rather than try to sort out all the noise associated with every single photon detection, it tells the rods and cones not to bother it until the light reaches a certain intensity. Read 15 remaining paragraphs | Comments
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Human eye might be able to detect entangled photons
Apple services went offline for up to 7 hours Thursday — and the company has yet to offer an explanation. An anonymous reader writes: The outage affected the App Store, iTunes in the Cloud, Apple TV, Mail Drop, Find my iPhone, and Photos. During the outage, Apple responded to complaints on Twitter, “Thank you for the information. We’re aware of this issue and are investigating, ” Tech Times reports that the iCloud Music Library had also experienced an outage on Wednesday, and that just weeks ago Apple released an operating system update which bricked several iPad Pros. And yesterday Amazon also experienced a service outage. Read more of this story at Slashdot.